Service Manual (SVC) - The service manual (Shop manual or Repair manual) tells you how to take the machine apart, fix it, and put it back together.Parts + Operators, etc.), but the basic function of the manual types remain the same and are as follows: There are 3 main types of manuals, each with a specific purpose. A must have for any John Deere 2020 owner. The manual is a digitally enhanced reproduction of the OEM manual and is bound for a lifetime of use. This Parts Manual contains 334 pages of helpful information.